M.C.Qs
on Solution & Concentration ......Unit # 9
1. Solution are
the examples of :
(a)
|
Compounds
|
(b)
|
Homogenous
mixture
|
(c)
|
Heterogeneous
mixture
|
(d)
|
Colloids
|
2. The amount of solute present
in a given amount of solvent or solution is called:
(a)
|
Concentration
|
(b)
|
Molarity
|
(c)
|
Molality
|
(d)
|
Normality
|
3.
Alloys are the examples of:
(a)
|
Compounds
|
(b)
|
Elements
|
(c)
|
Solutions
|
(d)
|
Colloids
|
4. An alloy is type of……..
solution:
(a)
|
Solid-gas
|
(b)
|
Solid-solid
|
(c)
|
Liquid-liquid
|
(d)
|
Gas-gas
|
5. In which mode of expression does the concentration of solution
remains independent of temperature?
(a)
|
% concentration
|
(b)
|
Molarity
|
(c)
|
Molality
|
(d)
|
Normality
|
6.
Isotonic solutions must have the same:
(a)
|
Density
|
(b)
|
Normality
|
(c)
|
Volume
|
(d)
|
osmotic
pressure
|
7.
A solution of known strength or
concentration is called:
(a)
|
Standard solution
|
(b)
|
Normal solution
|
(c)
|
Molal solution
|
(d)
|
Suspension
|
8.
The number of gram equivalents of solute
dissolved per dm3 of solution is called:
(a)
|
Mole fraction
|
(b)
|
Normality
|
(c)
|
Molality
|
(d)
|
% concentration
|
9. The number of moles of solute dissolved per
kilogram of solvent is called:
(a)
|
Mole fraction
|
(b)
|
Normality
|
(c)
|
Molality
|
(d)
|
%
concentration
|
10.
The number of moles of solute dissolved in
1 liter of solution is called:
(a)
|
molarity
|
(b)
|
Normality
|
(c)
|
Molality
|
(d)
|
%
concentration
|
11.
A solution which contains 1 mole of solute
dissolved in 1000 cm3 of water is designated by:
(a)
|
1M
|
(b)
|
1m
|
(c)
|
1N
|
(d)
|
10%
|
12.
A solution which contains 1 mole of NaCl
dissolved in 1 kg of water is designated by:
(a)
|
1M NaCl
|
(b)
|
1m NaCl
|
(c)
|
1N NaCl
|
(d)
|
10% NaCl
|
13.
A molal solution contains:
(a)
|
1 mole of
solute per dm3 of solution
|
(b)
|
1 mole of
solute per 1 kg of solvent
|
(c)
|
1 mole oc
solute per 1000 cm3 of solution
|
(d)
|
1 mole of
solute per half liter of solution
|
14.
A molal solution is one that contains one
mole of a solute in:
(a)
|
1000 g the
solvent
|
(b)
|
One liter of
the solvent
|
(c)
|
One liter of
the solution
|
(d)
|
22.4 liter of
the solution
|
15.
1N H2SO4 solution
contains:
(a)
|
98 g/dm3
|
(b)
|
9.8 g/dm3
|
(c)
|
980 g/dm3
|
(d)
|
49 g/dm3
|
16.
1N NaOH solution contains:
(a)
|
4 g/dm3
|
(b)
|
20 g/dm3
|
(c)
|
80 g/dm3
|
(d)
|
40 g/dm3
|
17.
The decimolar solution of H2SO4
solution contains:
(a)
|
98 g/dm3
|
(b)
|
9.8 g/dm3
|
(c)
|
980 g/dm3
|
(d)
|
4.9 g/dm3
|
18.
The semimolar solution of NaOH contains:
(a)
|
4 g/dm3
|
(b)
|
20 g/dm3
|
(c)
|
40 g/dm3
|
(d)
|
2 g/dm3
|
19. 56 g of KOH is dissolved in 1 liter of
water. The solution obtained is said to be:
(a)
|
Molar
|
(b)
|
Semimolar
|
(c)
|
Decimolar
|
(d)
|
decamolar
|
20.
The semimolar solution of KOH contains:
(a)
|
56 g/dm3
|
(b)
|
5.6 g/dm3
|
(c)
|
28 g/dm3
|
(d)
|
112 g/dm3
|
21.
5 liters of 0.5M HNO3 solution
contains:
(a)
|
2.5 moles
|
(b)
|
3moles
|
(c)
|
3.5 moles
|
(d)
|
4 moles
|
22.
2 liters of 0.25M NaCl solution contains:
(a)
|
29.25g
|
(b)
|
58.5g
|
(c)
|
5.85g
|
(d)
|
585g
|
23. How many gram of Na2CO3
is required to prepare its 0.5M solution of 250ml?
(a)
|
132.5 g
|
(b)
|
0.1325 g
|
(c)
|
1.325 g
|
(d)
|
13.25 g
|
24. The molarity of solution containing 45g of H2C2O4
in 250ml of solution is:
(a)
|
0.25 M
|
(b)
|
2.5 M
|
(c)
|
0.025 M
|
(d)
|
2 M
|
25. A 10M solution stands for:
(a)
|
Normal
solution
|
(b)
|
Molar
solution
|
(c)
|
Decamolar
solution
|
(d)
|
Decimolar solution
|
26.
A N/10 solution stands for:
(a)
|
Normal
solution
|
(b)
|
Molar
solution
|
(c)
|
Seminormal solution
|
(d)
|
Decinormal solution
|
27.
A N/2 solution stands for:
(a)
|
Normal
solution
|
(b)
|
Molar
solution
|
(c)
|
Seminormal solution
|
(d)
|
Decinormal
solution
|
28.
The molarity of solution that contains 10g
of urea in 500 ml of solution is:
(a)
|
0.33 M
|
(b)
|
3.34 M
|
(c)
|
0.033 M
|
(d)
|
2.5 M
|
29. 1m Na2CO3 solution
contains ……g of in 1000g of water.
(a)
|
1.06 g
|
(b)
|
10.6 g
|
(c)
|
106 g
|
(d)
|
53 g
|
30. How many gram of NaCl are to be taken to
prepare 100 ml of 10% salt solution?
(a)
|
4 g
|
(b)
|
40 g
|
(c)
|
80 g
|
(d)
|
10 g
|
31.
How many gram of HCl are in 1000 g of a 10
% solution?
(a)
|
100 g
|
(b)
|
10 g
|
(c)
|
9,8 g
|
(d)
|
98 g
|
32. The sum of the mole fractions of solute and
solvent is equal to:
(a)
|
0
|
(b)
|
1
|
(c)
|
2
|
(d)
|
3
|
33. The suspended particles in suspensions are
generally of the size:
(a)
|
10nm
|
(b)
|
100nm
|
(c)
|
1200nm
|
(d)
|
1nm
|
34. The size of constituent particles in
solution is generally:
(a)
|
1nm
|
(b)
|
10nm
|
(c)
|
1000nm
|
(d)
|
2-1000nm
|
35.
The size of dispersed particles in colloids
is:
(a)
|
1nm
|
(b)
|
10nm
|
(c)
|
1000nm
|
(d)
|
2-1000nm
|
36.
The intermediate type of mixture is :
(a)
|
Solution
|
(b)
|
Suspension
|
(c)
|
Colloids
|
(d)
|
None of the
above
|
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